Filters: Tags: Professional Papers (X) > Categories: Image (X) > partyWithName: Bastin, Edward Sunderland (X)

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Outwash plain of later glacial epoch: in valley of Middle Boulder Creek, between Eldora and Nederland, looking eastward. Boulder County, Colorado. Circa 1911. Outwash plain of later glacial epoch: in valley of Middle Boulder Creek, between Eldora and Nederland, looking eastward. Boulder County, Colorado. Circa 1911. Plate 12-A in U.S. Geological Survey. Professional paper 94. 1917. Categories: Image; Tags: Bastin, E.S. Collection, Colorado Professional Paper 94, Photographers, Professional Papers, photo print Photomicrograph: lean iron ore from Caribou, showing magnetite and ilmenite, augite and serpentine, black areas are magnetite and ilmenite, white areas are serpentine formed by alteration of olivine; some unaltered olivine remains and is gray. Colorado. Circa 1911. Photomicrograph: lean iron ore from Caribou, showing magnetite and ilmenite, augite and serpentine, black areas are magnetite and ilmenite, white areas are serpentine formed by alteration of olivine; some unaltered olivine remains and is gray. Colorado. Circa 1911. Plate 11-C, enlarged 29 diameters, in U.S. Geological Survey. Professional paper 94. 1917. Categories: Image; Tags: Bastin, E.S. Collection, Colorado Professional Paper 94, Photographers, Photomicrographs, Professional Papers, All tags... photo print, Fewer tags Caribou: looking west from Boulder County Hill. Boulder County, Colorado. Circa 1911. Caribou: looking west from Boulder County Hill. Boulder County, Colorado. Circa 1911. Plate 17-B in U.S. Geological Survey. Professional paper 94. 1917. Categories: Image; Tags: Bastin, E.S. Collection, Colorado Professional Paper 94, Photographers, Professional Papers, photo print Land-tied island, Spruce Head Island, Penobscott Bay. Hancock County, Maine, August 1904, Land-tied island, Spruce Head Island, Penobscott Bay. Hancock County, Maine, August 1904, plate 140-B in U.S. Geological Survey. Professional paper 60. 1908. Categories: Image; Tags: Bastin, E.S. Collection, Photographers, Professional Papers, United States Professional Paper 60, photo print Specimen of etched crystal of galena from vug in Hayseed vein, near Central City, crystals were coated with film of ammonium chloride to avoid reflections in photographing it. Colorado. Circa 1911. Specimen of etched crystal of galena from vug in Hayseed vein, near Central City, crystals were coated with film of ammonium chloride to avoid reflections in photographing it. Colorado. Circa 1911. Plate 17-A in U.S. Geological Survey. Professional paper 94. 1917. Categories: Image; Tags: Bastin, E.S. Collection, Colorado Professional Paper 94, Photographers, Professional Papers, Specimens, All tags... photo print, Fewer tags Photomicrograph: lean iron ore from Caribou, showing magnetite and ilmenite and augite, black areas are magnetite and ilmenite; gray areas are augite. Colorado. Circa 1911. Photomicrograph: lean iron ore from Caribou, showing magnetite and ilmenite and augite, black areas are magnetite and ilmenite; gray areas are augite. Colorado. Circa 1911. Plate 11-B, enlarged 16 diameters, in U.S. Geological Survey. Professional paper 94. 1917. Categories: Image; Tags: Bastin, E.S. Collection, Colorado Professional Paper 94, Photographers, Photomicrographs, Professional Papers, All tags... photo print, Fewer tags Mammoth Hill from east, showing open pits marking outcrop of Mammoth vein. Gilpin County, Colorado. Circa 1911. Mammoth Hill from east, showing open pits marking outcrop of Mammoth vein. Gilpin County, Colorado. Circa 1911. Plate 18-A in U.S. Geological Survey. Professional paper 94. 1917. Categories: Image; Tags: Bastin, E.S. Collection, Colorado Professional Paper 94, Photographers, Professional Papers, photo print